Plastic limit set (Product Code: SLE/CE/68) is a bench kit used to find the plastic limit of fine-grained soils — the water content at which a rolled soil thread just begins to crumble at 3 mm diameter — in soil mechanics laboratories. Students and technicians roll threads on its 20 cm x 15 cm glass plate, compare them with a 3 mm reference rod and dry the crumbs in six moisture containers. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM scientific laboratory apparatus manufacturer in India, at its own factory in Ambala.
| Parameter | Detail |
|---|---|
| Glass plate | 20 cm x 15 cm, with round ends |
| Reference rod | Brass or stainless steel, 3 mm diameter x 150 mm long |
| Flexible spatula | 15 cm |
| Moisture containers | Set of 6 |
| Porcelain basin | 150 mm diameter |
| Plastic wash bottle | 500 ml |
| Quantity | One of each item per set (moisture containers as one set of 6) |
| Product code | SLE/CE/68 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Fine soil is mixed with water in the porcelain basin using the spatula, with the wash bottle adding water a little at a time. A small ball is then rolled under the palm on the glass plate into a thread; when it reaches the thickness of the 3 mm rod without breaking, it is kneaded and rolled again. As the soil dries it eventually crumbles at that diameter, and those crumbs go into the moisture containers for oven-drying. Their average water content is the plastic limit.
Subtracting the plastic limit from the liquid limit gives the plasticity index, the key figure for classifying clays and silts on a plasticity chart. The kit is a staple of educational laboratory equipment in India for diploma and degree soil mechanics courses. Keep the glass plate clean and dry and roll with even pressure so results repeat between students.
ScienceLab is the brand of Jain Scientific Equipments Private Limited, which manufactures this plastic limit set as the OEM at its own licensed factory at Saha, Ambala, Haryana, India. Buying from the maker means the plate, rod, basin and containers arrive together as one set, sent factory-direct to colleges, polytechnics, soil laboratories, dealers and importers.
Additional sets for new student batches can be reordered from the same manufacturer — ask us whenever you expand the lab. Read about the company on our company profile.
The plastic limit is only meaningful beside the other consistency limits. These items complete the soil classification bench:
See all items in Civil Engineering Lab Equipment.
What does the Plastic limit set contain?
The Plastic limit set contains a 20 cm x 15 cm round-ended glass plate, a brass or stainless steel rod of 3 mm diameter and 150 mm length, a 15 cm flexible spatula, a set of six moisture containers, a 150 mm porcelain basin and a 500 ml plastic wash bottle.
What is the 3 mm rod in the Plastic limit set for?
The 3 mm rod in the Plastic limit set is a thickness reference. Students lay the rolled soil thread beside it to judge when the thread has reached 3 mm diameter, the point at which crumbling defines the plastic limit.
Is the reference rod in the Plastic limit set brass or stainless steel?
The reference rod in the Plastic limit set is offered in brass or stainless steel, both 3 mm in diameter and 150 mm long. State your preferred material in the enquiry so the quotation matches.
How is the plastic limit from this set used with the liquid limit?
The plastic limit measured with the Plastic limit set is subtracted from the liquid limit to give the plasticity index, which is used with the liquid limit to classify fine-grained soils and compare their plastic behaviour.
Who manufactures the Plastic limit set?
The Plastic limit set is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM at its own factory at Saha, Ambala, Haryana, India. Quotations and repeat orders come directly from the manufacturer.
Can the Plastic limit set be ordered in class quantities or for export?
Yes, the Plastic limit set can be quoted in class quantities for colleges and shipped within India or to international markets. Give the number of sets, the rod material and the delivery destination in your request.
Request a Plastic limit set quotation through our contact page or use the enquiry cart. You will receive pricing directly from the manufacturer.
Last updated: 24 September 2026